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MapKV

Struct MapKV 

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pub struct MapKV<K, V> { /* private fields */ }
Expand description

A wrapper that applies key and value wrappers to the key-value pairs contained in a type. This can be applied to a hash map or B-tree map to map the key-value pairs.

§Example

use std::collections::HashMap;

use rkyv::{
    with::{Inline, InlineAsBox, MapKV},
    Archive,
};

#[derive(Archive)]
struct Example<'a> {
    // This will apply `InlineAsBox` to the `&str` key, and `Inline` to the
    // `&str` value.
    #[rkyv(with = MapKV<InlineAsBox, Inline>)]
    hash_map: HashMap<&'a str, &'a str>,
}

Trait Implementations§

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impl<A, B, K, V> ArchiveWith<BTreeMap<K, V>> for MapKV<A, B>
where A: ArchiveWith<K>, B: ArchiveWith<V>,

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type Archived = ArchivedBTreeMap<<A as ArchiveWith<K>>::Archived, <B as ArchiveWith<V>>::Archived>

The archived type of Self with F.
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type Resolver = BTreeMapResolver

The resolver of a Self with F.
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fn resolve_with( field: &BTreeMap<K, V>, resolver: Self::Resolver, out: Place<Self::Archived>, )

Resolves the archived type using a reference to the field type F.
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impl<A, B, K, V, H> ArchiveWith<HashMap<K, V, H>> for MapKV<A, B>
where A: ArchiveWith<K>, B: ArchiveWith<V>, H: Default + BuildHasher,

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type Archived = ArchivedHashMap<<A as ArchiveWith<K>>::Archived, <B as ArchiveWith<V>>::Archived>

The archived type of Self with F.
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type Resolver = HashMapResolver

The resolver of a Self with F.
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fn resolve_with( field: &HashMap<K, V, H>, resolver: Self::Resolver, out: Place<Self::Archived>, )

Resolves the archived type using a reference to the field type F.
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impl<A, B, K, V, D> DeserializeWith<ArchivedBTreeMap<<A as ArchiveWith<K>>::Archived, <B as ArchiveWith<V>>::Archived>, BTreeMap<K, V>, D> for MapKV<A, B>
where A: ArchiveWith<K> + DeserializeWith<<A as ArchiveWith<K>>::Archived, K, D>, B: ArchiveWith<V> + DeserializeWith<<B as ArchiveWith<V>>::Archived, V, D>, K: Ord, D: Fallible + ?Sized,

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fn deserialize_with( field: &ArchivedBTreeMap<<A as ArchiveWith<K>>::Archived, <B as ArchiveWith<V>>::Archived>, deserializer: &mut D, ) -> Result<BTreeMap<K, V>, <D as Fallible>::Error>

Deserializes the field type F using the given deserializer.
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impl<A, B, K, V, D, S> DeserializeWith<ArchivedHashMap<<A as ArchiveWith<K>>::Archived, <B as ArchiveWith<V>>::Archived>, HashMap<K, V, S>, D> for MapKV<A, B>
where A: ArchiveWith<K> + DeserializeWith<<A as ArchiveWith<K>>::Archived, K, D>, B: ArchiveWith<V> + DeserializeWith<<B as ArchiveWith<V>>::Archived, V, D>, K: Hash + Eq, D: Fallible + ?Sized, S: Default + BuildHasher,

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fn deserialize_with( field: &ArchivedHashMap<<A as ArchiveWith<K>>::Archived, <B as ArchiveWith<V>>::Archived>, deserializer: &mut D, ) -> Result<HashMap<K, V, S>, <D as Fallible>::Error>

Deserializes the field type F using the given deserializer.
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impl<A, B, K, V, S> SerializeWith<BTreeMap<K, V>, S> for MapKV<A, B>
where A: ArchiveWith<K> + SerializeWith<K, S>, B: ArchiveWith<V> + SerializeWith<V, S>, <A as ArchiveWith<K>>::Archived: Ord, S: Fallible + Allocator + Writer + ?Sized, S::Error: Source,

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fn serialize_with( field: &BTreeMap<K, V>, serializer: &mut S, ) -> Result<Self::Resolver, <S as Fallible>::Error>

Serializes the field type F using the given serializer.
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impl<A, B, K, V, S, H> SerializeWith<HashMap<K, V, H>, S> for MapKV<A, B>
where A: ArchiveWith<K> + SerializeWith<K, S>, B: ArchiveWith<V> + SerializeWith<V, S>, K: Hash + Eq, <A as ArchiveWith<K>>::Archived: Eq + Hash, S: Fallible + Allocator + Writer + ?Sized, S::Error: Source, H: Default + BuildHasher, H::Hasher: Default,

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fn serialize_with( field: &HashMap<K, V, H>, serializer: &mut S, ) -> Result<Self::Resolver, <S as Fallible>::Error>

Serializes the field type F using the given serializer.

Auto Trait Implementations§

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impl<K, V> Freeze for MapKV<K, V>

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impl<K, V> RefUnwindSafe for MapKV<K, V>

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impl<K, V> Send for MapKV<K, V>
where K: Send, V: Send,

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impl<K, V> Sync for MapKV<K, V>
where K: Sync, V: Sync,

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impl<K, V> Unpin for MapKV<K, V>
where K: Unpin, V: Unpin,

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impl<K, V> UnsafeUnpin for MapKV<K, V>

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impl<K, V> UnwindSafe for MapKV<K, V>
where K: UnwindSafe, V: UnwindSafe,

Blanket Implementations§

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> ArchivePointee for T

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type ArchivedMetadata = ()

The archived version of the pointer metadata for this type.
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fn pointer_metadata( _: &<T as ArchivePointee>::ArchivedMetadata, ) -> <T as Pointee>::Metadata

Converts some archived metadata to the pointer metadata for itself.
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> LayoutRaw for T

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fn layout_raw(_: <T as Pointee>::Metadata) -> Result<Layout, LayoutError>

Returns the layout of the type.
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impl<T, N1, N2> Niching<NichedOption<T, N1>> for N2
where T: SharedNiching<N1, N2>, N1: Niching<T>, N2: Niching<T>,

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unsafe fn is_niched(niched: *const NichedOption<T, N1>) -> bool

Returns whether the given value has been niched. Read more
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fn resolve_niched(out: Place<NichedOption<T, N1>>)

Writes data to out indicating that a T is niched.
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impl<T> Pointee for T

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type Metadata = ()

The metadata type for pointers and references to this type.
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.